Analytical Methods Approved for Drinking Water Compliance Monitoring of Inorganic Contaminants and Other Inorganic Constituents Analysis for the following inorganic contaminants and constituents shall be conducted in accordance with the methods in the following table, or their equivalent as determined by EPA. The methods are specified in 40 CFR 141.23 and Appendix A to Subpart C of Part 141. The monitoring requirements are specified in 40 CFR 141.23, 141.41, 141.86 - 141.88, and 141.135. The CFR is the legal reference for approved methods and takes precedence over this table. The table should accurately reflect the analytical methods information published in 40 CFR 141. Inorganic Contaminants: Alkalinity Method Organization Reference Title Date EPA Publication Number Source of Method D1067-92 B ASTM International Standard Test Methods for Acidity or Alkalinity of Water: Electrometric or Color-Change Titration 1992 ASTM International D1067-02 B ASTM International Standard Test Methods for Acidity or Alkalinity of Water: Electrometric or Color-Change Titration 2002 ASTM International D1067-06 B ASTM International Standard Test Methods for Acidity or Alkalinity of Water: Electrometric or Color-Change Titration 2006 ASTM International D1067-11 B ASTM International Standard Test Methods for Acidity or Alkalinity of Water: Electrometric or Color-Change Titration 2011 ASTM International D1067-16 B ASTM International Standard Test Methods for Acidity or Alkalinity of Water: Electrometric or Color-Change Titration 2016 ASTM International SEPA United States Environmental Protection Agency Office of Water (MS - 4606 M) EPA 815-B-24-002 January 2024 ------- Page 2 of 69 2320 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 18th Edition 1992 Standard Methods 2320 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 19th Edition 1995 Standard Methods 2320 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 20th Edition 1998 Standard Methods 2320 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 2320 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 2320 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods 2320 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 24th Edition 2023 Standard Methods 2320 B-97 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 1997 Standard Methods 1-1030-85 US Geological Survey In Methods for Determination of Inorganic Substances in Water and Fluvial Sediments, USGS Series: Techniques of Water-Resource Investigation Report; edited by Fishman, M.J. and Friedman, LC. 1989 USGS Antimony Method Organization Reference Title Date EPA Publication Number Source of Method D3697-92 ASTM International Standard Test Method for Antimony in Water 1992 ASTM International ------- Page 3 of 69 D3697-02 ASTM International Standard Test Method for Antimony in Water 2002 ASTM International D3697-07 ASTM International Standard Test Method for Antimony in Water 2007 ASTM International D3697-12 ASTM International Standard Test Method for Antimony in Water 2012 ASTM International D3697-17 ASTM International Standard Test Method for Antimony in Water 2017 ASTM International 200.5, Rev. EPA Determination of Trace Elements October 2003 E PA/600- R-06/115 EPA/600-R-06/115 4.2 in Drinking Water by Axially Viewed Inductively Coupled Plasma - Atomic Emission Spectrometry 200.8, Rev. EPA In Methods for the Determination May 1994 EPA/600/R-94/111 National Environmental Methods Index 5.4 of Metals in Environmental Samples, Supplement 1 200.9, Rev. EPA In Methods for the Determination May 1994 EPA/600/R-94/111 National Environmental Methods Index 2.2 of Metals in Environmental Samples, Supplement 1 Note: Preconcentration may be required for direct analysis of antimony by Method 200.9 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 18th Edition Note: Preconcentration may be required for direct analysis of antimony by Method 3113 B unless multiple in-furnace depositions are made 1992 Standard Methods 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 19th Edition Note: Preconcentration may be required for direct analysis of antimony by Method 3113 B unless multiple in-furnace depositions are made 1995 Standard Methods 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods ------- Page 4 of 69 Note: Preconcentration may be required for direct analysis of antimony by Method 3113 B unless multiple in-furnace depositions are made 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition Note: Preconcentration may be required for direct analysis of antimony by Method 3113 B unless multiple in-furnace depositions are made 2012 Standard Methods 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition Note: Preconcentration may be required for direct analysis of antimony by Method 3113 B unless multiple in-furnace depositions are made 2017 Standard Methods 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 24th Edition Note: Preconcentration may be required for direct analysis of antimony by Method 3113 B unless multiple in-furnace depositions are made 2023 Standard Methods 3113 B-99 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. Note: Preconcentration may be required for direct analysis of antimony by Method 3113 B-99 unless multiple in-furnace depositions are made 1999 Standard Methods ------- Page 5 of 69 3113 B-04 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. Note: Preconcentration may be required for direct analysis of antimony by Method 3113 B-04 unless multiple in-furnace depositions are made 2004 Standard Methods 3113 B-10 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. Note: Preconcentration may be required for direct analysis of antimony by Method 3113 B-10 unless multiple in-furnace depositions are made 2010 Standard Methods Arsenic Criteria for analyzing arsenic, barium, beryllium, cadmium, calcium, chromium, copper, lead, nickel, selenium, sodium and thallium with digestion or directly without digestion, and other analytical test procedures are contained in Technical Notes on Drinking Water Methods (EPA/600/R-94/173), available through EPA's digital publications National Environmental Publications Internet Site (EPA/600/R-94/173). Method Organization Reference Title Date EPA Publication Number Source of Method D2972-97 B ASTM International Standard Test Methods for Arsenic in Water - Atomic Absorption, Hydride Generation 1997 ASTM International D2972-03 B ASTM International Standard Test Methods for Arsenic in Water - Atomic Absorption, Hydride Generation 2003 ASTM International D2972-08 B ASTM International Standard Test Methods for Arsenic in Water - Atomic Absorption, Hydride Generation 2008 ASTM International ------- Page 6 of 69 D2972-15 B ASTM International Standard Test Methods for Arsenic in Water - Atomic Absorption, Hydride Generation 2015 ASTM International D2972-97 C ASTM International Standard Test Methods for Arsenic in Water - Atomic Absorption, Graphite Furnace 1997 ASTM International D2972-03 C ASTM International Standard Test Methods for Arsenic in Water - Atomic Absorption, Graphite Furnace 2003 ASTM International D2972-08 C ASTM International Standard Test Methods for Arsenic in Water - Atomic Absorption, Graphite Furnace 2008 ASTM International D2972-15 C ASTM International Standard Test Methods for Arsenic in Water - Atomic Absorption, Graphite Furnace 2015 ASTM International 200.5, Rev. 4.2 EPA Determination of Trace Elements in Drinking Water by Axially Viewed Inductively Coupled Plasma - Atomic Emission Spectrometry October 2003 E PA/600- R-06/115 EPA/600-R-06/115 200.8, Rev. 5.4 EPA In Methods for the Determination of Metals in Environmental Samples, Supplement 1 Note: If ultrasonic nebulization is used in determination of arsenic by Method 200.8, the arsenic must be in the pentavalent state to provide uniform response. For direct analysis of arsenic by Method 200.8 using ultrasonic nebulization, samples and standards must contain one mg/L sodium hypochlorite. May 1994 EPA/600/R-94/111 National Environmental Methods Index 200.9, Rev. 2.2 EPA In Methods for the Determination of Metals in Environmental Samples, Supplement 1 Note: MDLs reported in Methods 200.7 and 200.9 were determined using a 2X preconcentration step during sample digestion; MDLs determined by direct analysis (i.e., May 1994 EPA/600/R-94/111 National Environmental Methods Index ------- Page 7 of 69 no sample digestion) will be higher. 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 18th Edition 1992 Standard Methods 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 19th Edition 1995 Standard Methods 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 24th Edition 2023 Standard Methods 3114 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 18th Edition 1992 Standard Methods 3114 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 19th Edition 1995 Standard Methods 3114 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 3114 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 3114 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods 3114 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 24th Edition 2023 Standard Methods 3113 B-99 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the 1999 Standard Methods ------- Page 8 of 69 regulations or in Appendix A to Subpart C of Part 141 are approved. 3113 B-04 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 2004 Standard Methods 3113 B-10 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 2010 Standard Methods 3114 B-97 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 1997 Standard Methods 3114 B-09 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 2009 Standard Methods Asbestos Guidance on conducting asbestos analysis is described in Section V of Technical Notes on Drinking Water Methods (EPA/600/R-94/173) available through EPA's digital publications National Environmental Publications Internet Site (EPA/600/R-94/173). Method Organization Reference Title Date EPA Publication Number Source of Method 100.1 EPA Analytical Method for the Determination of Asbestos Fibers in Water September 1983 EPA/600/4-83-043 National Environmental Methods Index 100.2 EPA Determination of Asbestos Structures over 10 ixm in Length in Drinking Water June 1994 EPA/600R-94/134 EPA/600R-94/134 ------- Page 9 of 69 Barium Criteria for analyzing arsenic, barium, beryllium, cadmium, calcium, chromium, copper, lead, nickel, selenium, sodium and thallium with digestion or directly without digestion, and other analytical test procedures are contained in Technical Notes on Drinking Water Methods (EPA/600/R-94/173), available through EPA's digital publications National Environmental Publications Internet Site (EPA/600/R-94/173). Method Organization Reference Title Date EPA Publication Number Source of Method 200.5, Rev. 4.2 EPA Determination of Trace Elements in Drinking Water by Axially Viewed Inductively Coupled Plasma - Atomic Emission Spectrometry October 2003 E PA/600- R-06/115 EPA/600-R-06/115 200.7, Rev. 4.4 EPA In Methods for the Determination of Metals in Environmental Samples, Supplement 1 Note: MDLs reported in Methods 200.7 and 200.9 were determined using a 2X preconcentration step during sample digestion; MDLs determined by direct analysis (i.e., no sample digestion) will be higher. May 1994 EPA/600/R-94/111 National Environmental Methods Index 200.8, Rev. 5.4 EPA In Methods for the Determination of Metals in Environmental Samples, Supplement 1 May 1994 EPA/600/R-94/111 National Environmental Methods Index 3111 D Standard Methods Standard Methods for the Examination of Water and Wastewater, 18th Edition 1992 Standard Methods 3111 D Standard Methods Standard Methods for the Examination of Water and Wastewater, 19th Edition 1995 Standard Methods 3111 D Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 3111 D Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 3111 D Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods ------- Page 10 of 69 3111 D Standard Methods Standard Methods for the Examination of Water and Wastewater, 24th Edition 2023 Standard Methods 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 18th Edition 1992 Standard Methods 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 19th Edition 1995 Standard Methods 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 24th Edition 2023 Standard Methods 3120 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 18th Edition 1992 Standard Methods 3120 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 19th Edition 1995 Standard Methods 3120 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 20th Edition 1998 Standard Methods 3120 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 3120 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 3120 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods ------- Page 11 of 69 3120 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 24th Edition 2023 Standard Methods 3111 D-99 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 1999 Standard Methods 3113 B-99 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 1999 Standard Methods 3113 B-04 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 2004 Standard Methods 3113 B-10 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 2010 Standard Methods 3120 B-99 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 1999 Standard Methods Beryllium Criteria for analyzing arsenic, barium, beryllium, cadmium, calcium, chromium, copper, lead, nickel, selenium, sodium and thallium with digestion or directly without digestion, and other analytical test procedures are contained in Technical Notes on Drinking Water Methods (EPA/600/R-94/173), available through EPA's digital publications National Environmental Publications Internet Site (EPA/600/R-94/173). ------- Page 12 of 69 Method Organization Reference Title Date EPA Publication Number Source of Method D3645-97 B ASTM International Standard Test Methods for Beryllium in Water-Atomic Absorption, Graphite Furnace 1997 ASTM International D3645-03 B ASTM International Standard Test Methods for Beryllium in Water-Atomic Absorption, Graphite Furnace 2003 ASTM International D3645-08 B ASTM International Standard Test Methods for Beryllium in Water-Atomic Absorption, Graphite Furnace 2008 ASTM International D3645-15 B ASTM International Standard Test Methods for Beryllium in Water-Atomic Absorption, Graphite Furnace 2015 ASTM International 200.5, Rev. 4.2 EPA Determination of Trace Elements in Drinking Water by Axially Viewed Inductively Coupled Plasma - Atomic Emission Spectrometry October 2003 E PA/600- R-06/115 EPA/600-R-06/115 200.7, Rev. 4.4 EPA In Methods for the Determination of Metals in Environmental Samples, Supplement 1 Note: MDLs reported in Methods 200.7 and 200.9 were determined using a 2X preconcentration step during sample digestion; MDLs determined by direct analysis (i.e., no sample digestion) will be higher. May 1994 EPA/600/R-94/111 National Environmental Methods Index 200.8, Rev. 5.4 EPA In Methods for the Determination of Metals in Environmental Samples, Supplement 1 May 1994 EPA/600/R-94/111 National Environmental Methods Index 200.9, Rev. 2.2 EPA In Methods for the Determination of Metals in Environmental Samples, Supplement 1 Note: MDLs reported in Methods 200.7 and 200.9 were determined using a 2X preconcentration step during sample digestion; MDLs determined by direct analysis (i.e., May 1994 EPA/600/R-94/111 National Environmental Methods Index ------- Page 13 of 69 no sample digestion) will be higher. 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 18th Edition 1992 Standard Methods 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 19th Edition 1995 Standard Methods 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 24th Edition 2023 Standard Methods 3120 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 18th Edition 1992 Standard Methods 3120 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 19th Edition 1995 Standard Methods 3120 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 20th Edition 1998 Standard Methods 3120 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 3120 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 3120 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods 3120 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 24th Edition 2023 Standard Methods ------- Page 14 of 69 3113 B-99 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 1999 Standard Methods 3113 B-04 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 2004 Standard Methods 3113 B-10 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 2010 Standard Methods 3120 B-99 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 1999 Standard Methods Cadmium Criteria for analyzing arsenic, barium, beryllium, cadmium, calcium, chromium, copper, lead, nickel, selenium, sodium and thallium with digestion or directly without digestion, and other analytical test procedures are contained in Technical Notes on Drinking Water Methods (EPA/600/R-94/173), available through EPA's digital publications National Environmental Publications Internet Site (EPA/600/R-94/173). Method Organization Reference Title Date EPA Publication Number Source of Method 200.5, Rev. 4.2 EPA Determination of Trace Elements in Drinking Water by Axially Viewed Inductively Coupled Plasma - Atomic Emission Spectrometry October 2003 E PA/600- R-06/115 EPA/600-R-06/115 200.7, Rev. 4.4 EPA In Methods for the Determination of Metals in Environmental Samples, Supplement 1 May 1994 EPA/600/R-94/111 National Environmental Methods Index ------- Page 15 of 69 Note: MDLs reported in Methods 200.7 and 200.9 were determined using a 2X preconcentration step during sample digestion; MDLs determined by direct analysis (i.e., no sample digestion) will be higher. For direct analysis of cadmium by Method 200.7, sample preconcentration using pneumatic nebulization may be required to achieve lower detection limits. 200.8, Rev. EPA In Methods for the Determination May 1994 EPA/600/R-94/111 National Environmental Methods 5.4 of Metals in Environmental Samples, Supplement 1 Index 200.9, Rev. EPA In Methods for the Determination May 1994 EPA/600/R-94/111 National Environmental Methods Index 2.2 of Metals in Environmental Samples, Supplement 1 Note: MDLs reported in Methods 200.7 and 200.9 were determined using a 2X preconcentration step during sample digestion; MDLs determined by direct analysis (i.e., no sample digestion) will be higher. 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 18th Edition 1992 Standard Methods 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 19th Edition 1995 Standard Methods 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods ------- Page 16 of 69 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 24th Edition 2023 Standard Methods 3113 B-99 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 1999 Standard Methods 3113 B-04 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 2004 Standard Methods 3113 B-10 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 2010 Standard Methods Calcium Criteria for analyzing arsenic, barium, beryllium, cadmium, calcium, chromium, copper, lead, nickel, selenium, sodium and thallium with digestion or directly without digestion, and other analytical test procedures are contained in Technical Notes on Drinking Water Methods (EPA/600/R-94/173), available through EPA's digital publications National Environmental Publications Internet Site (EPA/600/R-94/173). Method Organization Reference Title Date EPA Publication Number Source of Method D511-93 A ASTM International Standard Test Methods for Calcium and Magnesium in Water - Complexometric Titration 1993 ASTM International D511-03 A ASTM International Standard Test Methods for Calcium and Magnesium in Water - Complexometric Titration 2003 ASTM International D511-09 A ASTM International Standard Test Methods for Calcium and Magnesium in Water - Complexometric Titration 2009 ASTM International D511-14 A ASTM International Standard Test Methods for Calcium and Magnesium in Water - Complexometric Titration 2014 ASTM International ------- Page 17 of 69 D511-93 B ASTM International Standard Test Methods for Calcium and Magnesium in Water - Atomic Absorption 1993 ASTM International D511-03 B ASTM International Standard Test Methods for Calcium and Magnesium in Water - Atomic Absorption 2003 ASTM International D511-09 B ASTM International Standard Test Methods for Calcium and Magnesium in Water - Atomic Absorption 2009 ASTM International D511-14 B ASTM International Standard Test Methods for Calcium and Magnesium in Water - Atomic Absorption 2014 ASTM International D6919-03 ASTM International Standard Test Method for Determination of Dissolved Alkali and Alkaline Earth Cations and Ammonium in Water and Wastewater by Ion Chromatography 2003 ASTM International D6919-09 ASTM International Standard Test Method for Determination of Dissolved Alkali and Alkaline Earth Cations and Ammonium in Water and Wastewater by Ion Chromatography 2009 ASTM International D6919-17 ASTM International Standard Test Method for Determination of Dissolved Alkali and Alkaline Earth Cations and Ammonium in Water and Wastewater by Ion Chromatography 2017 ASTM International 200.5, Rev. 4.2 EPA Determination of Trace Elements in Drinking Water by Axially Viewed Inductively Coupled Plasma - Atomic Emission Spectrometry October 2003 E PA/600- R-06/115 EPA/600-R-06/115 200.7, Rev. 4.4 EPA In Methods for the Determination of Metals in Environmental Samples, Supplement 1 Note: MDLs reported in Methods 200.7 and 200.9 were determined using a 2X preconcentration step May 1994 EPA/600/R-94/111 National Environmental Methods Index ------- Page 18 of 69 during sample digestion; MDLs determined by direct analysis (i.e., no sample digestion) will be higher. 3111 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 18th Edition 1992 Standard Methods 3111 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 19th Edition 1995 Standard Methods 3111 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 3111 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 3111 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods 3111 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 24th Edition 2023 Standard Methods 3120 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 18th Edition 1992 Standard Methods 3120 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 19th Edition 1995 Standard Methods 3120 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 20th Edition 1998 Standard Methods 3120 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 3120 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 3120 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods ------- Page 19 of 69 3120 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 24th Edition 2023 Standard Methods 3500-Ca D Standard Methods Standard Methods for the Examination of Water and Wastewater, 18th Edition 1992 Standard Methods 3500-Ca D Standard Methods Standard Methods for the Examination of Water and Wastewater, 19th Edition 1995 Standard Methods 3500-Ca B Standard Methods Standard Methods for the Examination of Water and Wastewater, 20th Edition 1998 Standard Methods 3500-Ca B Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 3500-Ca B Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 3500-Ca B Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods 3500-Ca B Standard Methods Standard Methods for the Examination of Water and Wastewater, 24th Edition 2023 Standard Methods 3111 B-99 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 1999 Standard Methods 3120 B-99 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 1999 Standard Methods 3500-Ca B- 97 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to 1997 Standard Methods ------- Page 20 of 69 Subpart C of Part 141 are approved. Chromium Criteria for analyzing arsenic, barium, beryllium, cadmium, calcium, chromium, copper, lead, nickel, selenium, sodium and thallium with digestion or directly without digestion, and other analytical test procedures are contained in Technical Notes on Drinking Water Methods (EPA/600/R-94/173), available through EPA's digital publications National Environmental Publications Internet Site (EPA/600/R-94/173). Method Organization Reference Title Date EPA Publication Number Source of Method 200.5, Rev. EPA Determination of Trace Elements October 2003 E PA/600- R-06/115 EPA/600-R-06/115 4.2 in Drinking Water by Axially Viewed Inductively Coupled Plasma - Atomic Emission Spectrometry 200.7, Rev. EPA In Methods for the Determination May 1994 EPA/600/R-94/111 National Environmental Methods 4.4 of Metals in Environmental Samples, Supplement 1 Note: MDLs reported in Methods 200.7 and 200.9 were determined using a 2X preconcentration step during sample digestion; MDLs determined by direct analysis (i.e., no sample digestion) will be higher. Index 200.8, Rev. EPA In Methods for the Determination May 1994 EPA/600/R-94/111 National Environmental Methods 5.4 of Metals in Environmental Samples, Supplement 1 Index 200.9, Rev. EPA In Methods for the Determination May 1994 EPA/600/R-94/111 National Environmental Methods Index 2.2 of Metals in Environmental Samples, Supplement 1 Note: MDLs reported in Methods 200.7 and 200.9 were determined using a 2X preconcentration step during sample digestion; MDLs determined by direct analysis (i.e., no sample digestion) will be higher. 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 18th Edition 1992 Standard Methods ------- Page 21 of 69 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 19th Edition 1995 Standard Methods 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 24th Edition 2023 Standard Methods 3120 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 18th Edition 1992 Standard Methods 3120 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 19th Edition 1995 Standard Methods 3120 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 20th Edition 1998 Standard Methods 3120 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 3120 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 3120 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods 3120 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 24th Edition 2023 Standard Methods 3113 B-99 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to 1999 Standard Methods ------- Page 22 of 69 Subpart C of Part 141 are approved. 3113 B-04 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 2004 Standard Methods 3113 B-10 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 2010 Standard Methods 3120 B-99 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 1999 Standard Methods Conductivity Method Organization Reference Title Date EPA Publication Number Source of Method D1125-95 A ASTM International Standard Test Methods for Electrical Conductivity and Resistivity of Water 1995 ASTM International D1125-14 A ASTM International Standard Test Methods for Electrical Conductivity and Resistivity of Water 2014 ASTM International 2510 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 18th Edition 1992 Standard Methods 2510 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 19th Edition 1995 Standard Methods 2510 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 20th Edition 1998 Standard Methods ------- Page 23 of 69 2510 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 2510 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 2510 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods 2510 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 24th Edition 2023 Standard Methods 2510 B-97 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 1997 Standard Methods Copper Criteria for analyzing arsenic, barium, beryllium, cadmium, calcium, chromium, copper, lead, nickel, selenium, sodium and thallium with digestion or directly without digestion, and other analytical test procedures are contained in Technical Notes on Drinking Water Methods (EPA/600/R-94/173), available through EPA's digital publications National Environmental Publications Internet Site (EPA/600/R-94/173). Method Organization Reference Title Date EPA Publication Number Source of Method D1688-95 A ASTM International Standard Test Methods for Copper in Water - Atomic Absorption, Direct 1995 ASTM International D1688-02 A ASTM International Standard Test Methods for Copper in Water - Atomic Absorption, Direct 2002 ASTM International D1688-07 A ASTM International Standard Test Methods for Copper in Water - Atomic Absorption, Direct 2007 ASTM International D1688-12 A ASTM International Standard Test Methods for Copper in Water - Atomic Absorption, Direct 2012 ASTM International D1688-17 A ASTM International Standard Test Methods for Copper in Water - Atomic Absorption, Direct 2017 ASTM International ------- Page 24 of 69 D1688-95 C ASTM International Standard Test Method for Copper in Water - Atomic Absorption, Graphite Furnace 1995 ASTM International D1688-02 C ASTM International Standard Test Method for Copper in Water - Atomic Absorption, Graphite Furnace 2002 ASTM International D1688-07 C ASTM International Standard Test Method for Copper in Water - Atomic Absorption, Graphite Furnace 2007 ASTM International D1688-12 C ASTM International Standard Test Method for Copper in Water - Atomic Absorption, Graphite Furnace 2012 ASTM International D1688-17 C ASTM International Standard Test Method for Copper in Water - Atomic Absorption, Graphite Furnace 2017 ASTM International 200.5, Rev. 4.2 EPA Determination of Trace Elements in Drinking Water by Axially Viewed Inductively Coupled Plasma - Atomic Emission Spectrometry October 2003 E PA/600- R-06/115 EPA/600-R-06/115 200.7, Rev. 4.4 EPA In Methods for the Determination of Metals in Environmental Samples, Supplement 1 Note: MDLs reported in Methods 200.7 and 200.9 were determined using a 2X preconcentration step during sample digestion; MDLs determined by direct analysis (i.e., no sample digestion) will be higher. May 1994 EPA/600/R-94/111 National Environmental Methods Index 200.8, Rev. 5.4 EPA In Methods for the Determination of Metals in Environmental Samples, Supplement 1 May 1994 EPA/600/R-94/111 National Environmental Methods Index 200.9, Rev. 2.2 EPA In Methods for the Determination of Metals in Environmental Samples, Supplement 1 Note: MDLs reported in Methods 200.7 and 200.9 were determined using a 2X preconcentration step during sample digestion; MDLs determined by direct analysis (i.e., May 1994 EPA/600/R-94/111 National Environmental Methods Index ------- Page 25 of 69 no sample digestion) will be higher. Hach 8026, Rev. 1.2 Hach Company Spectrophotometry Measurement of Copper in Finished Drinking Water December 2015 Hach 8026. Rev. 1.2 Hach 10272, Rev. 1.2 Hach Company Spectrophotometric Measurement of Copper in Finished Drinking Water December 2015 Hach 10272. Rev. 1.2 3111 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 18th Edition 1992 Standard Methods 3111 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 19th Edition 1995 Standard Methods 3111 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 3111 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 3111 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods 3111 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 24th Edition 2023 Standard Methods 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 18th Edition 1992 Standard Methods 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 19th Edition 1995 Standard Methods 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods ------- Page 26 of 69 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 24th Edition 2023 Standard Methods 3120 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 18th Edition 1992 Standard Methods 3120 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 19th Edition 1995 Standard Methods 3120 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 20th Edition 1998 Standard Methods 3120 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 3120 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 3120 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods 3120 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 24th Edition 2023 Standard Methods 3111 B-99 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 1999 Standard Methods 3113 B-99 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 1999 Standard Methods 3113 B-04 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to 2004 Standard Methods ------- Page 27 of 69 Subpart C of Part 141 are approved. 3113 B-10 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 2010 Standard Methods 3120 B-99 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 1999 Standard Methods Cyanide Method Organization Reference Title Date EPA Publication Number Source of Method ALPKEM OIA-1677, DW Available Cyanide by Flow Injection, Ligand Exchange and Amperometry Note: Sulfide levels below those detected using lead acetate paper may produce positive interference. Test samples using a more sensitive sulfide method. January 2004 E P A-821- R-04-001 E P A-821- R-04-001 D2036-98 A ASTM International Standard Test Methods for Cyanides in Water - Total Cyanides after Distillation 1998 ASTM International D2036-06 A ASTM International Standard Test Methods for Cyanides in Water - Total Cyanides after Distillation 2006 ASTM International D2036-98 B ASTM International Standard Test Methods for Cyanides in Water - Cyanides Amenable to Chlorination by Difference 1998 ASTM International D2036-06 B ASTM International Standard Test Methods for Cyanides in Water - Cyanides Amenable to Chlorination by Difference 2006 ASTM International ------- Page 28 of 69 D6888-04 ASTM International Standard Test Method for Available Cyanide with Ligand Displacement and Flow Injection Analysis (FIA) Utilizing Gas Separation and Amperometric Detection Note: Sulfide levels below those detected using lead acetate paper may produce positive interference. Test samples using a more sensitive sulfide method. 2004 ASTM International 335.4, Rev. 1.0 EPA In Methods for the Determination of Inorganic Substances in Environmental Samples August 1993 E PA/600/R-93/100 National Environmental Methods Index ME355.01 H & E Testing Laboratory Determination of Cyanide in Drinking Water by GC/MS Headspace May 26, 2009 ME355.01 Kelada-01, Rev. 1.2 Kelada Kelada Automated Test Methods for Total Cyanide, Acid Dissociable Cyanide, and Thiocyanate Note: A 450-W UV lamp may be used in place of the 550-W lamp if it meets the method QC acceptance criteria. Similarly, flow cell configuration and flow conditions may be modified, provided the QC acceptance criteria are met. August 2001 EPA 821-B-01-009 Kelada QuikChem 10-204-00- 1-X, Rev. 2.1 Lachat Instruments Digestion and Distillation of Total Cyanide in Drinking and Wastewaters using MICRO DIST and Determination of Cyanide by Flow Injection Analysis November 2000 QuikChem 10-204-00-1-X. Rev. 2.1 4500-CN" C Standard Methods Standard Methods for the Examination of Water and Wastewater, 18th Edition 1992 Standard Methods 4500-CN" C Standard Methods Standard Methods for the Examination of Water and Wastewater, 19th Edition 1995 Standard Methods ------- Page 29 of 69 4500-CN" C Standard Methods Standard Methods for the Examination of Water and Wastewater, 20th Edition 1998 Standard Methods 4500-CN" C Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition Note: MgCh must be included in the distillation 2005 Standard Methods 4500-CN" C Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition Note: MgCh must be included in the distillation 2012 Standard Methods 4500-CN" C Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition Note: MgCh must be included in the distillation 2017 Standard Methods 4500-CN" C Standard Methods Standard Methods for the Examination of Water and Wastewater, 24th Edition Note: MgCh must be included in the distillation 2023 Standard Methods 4500-CN" E Standard Methods Standard Methods for the Examination of Water and Wastewater, 18th Edition 1992 Standard Methods 4500-CN" E Standard Methods Standard Methods for the Examination of Water and Wastewater, 19th Edition 1995 Standard Methods 4500-CN" E Standard Methods Standard Methods for the Examination of Water and Wastewater, 20th Edition 1998 Standard Methods 4500-CN" E Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 4500-CN" E Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 4500-CN" E Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods ------- Page 30 of 69 4500-CN" E Standard Methods Standard Methods for the Examination of Water and Wastewater, 24th Edition 2023 Standard Methods 4500-CN" F Standard Methods Standard Methods for the Examination of Water and Wastewater, 18th Edition 1992 Standard Methods 4500-CN" F Standard Methods Standard Methods for the Examination of Water and Wastewater, 19th Edition 1995 Standard Methods 4500-CN" F Standard Methods Standard Methods for the Examination of Water and Wastewater, 20th Edition 1998 Standard Methods 4500-CN" F Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 4500-CN" F Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 4500-CN" F Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods 4500-CN" F Standard Methods Standard Methods for the Examination of Water and Wastewater, 24th Edition 2023 Standard Methods 4500-CN" G Standard Methods Standard Methods for the Examination of Water and Wastewater, 18th Edition 1992 Standard Methods 4500-CN" G Standard Methods Standard Methods for the Examination of Water and Wastewater, 19th Edition 1995 Standard Methods 4500-CN" G Standard Methods Standard Methods for the Examination of Water and Wastewater, 20th Edition 1998 Standard Methods 4500-CN" G Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 4500-CN" G Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods ------- Page 31 of 69 4500-CN" G Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods 4500-CN" G Standard Methods Standard Methods for the Examination of Water and Wastewater, 24th Edition 2023 Standard Methods 4500-CN" C- Standard Online version. Approval year is 1999 Standard Methods 99 Methods Online designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. Note: MgChmust be included in the distillation 4500-CN" E- Standard Online version. Approval year is 1999 Standard Methods 99 Methods Online designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 4500-CN" F- Standard Online version. Approval year is 1999 Standard Methods 99 Methods Online designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 4500-CN" G- Standard Online version. Approval year is 1999 Standard Methods 99 Methods Online designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 1-3300-85 US Geological Survey In Methods for Determination of Inorganic Substances in Water and Fluvial Sediments, USGS Series: Techniques of Water-Resource Investigation Report; edited by Fishman, M.J. and Friedman, LC. 1989 USGS ------- Page 32 of 69 Fluoride Method Organization Reference Title Date EPA Publication Number Source of Method D1179-93 B ASTM International Standard Test Methods for Fluoride in Water - Ion Selective Electrode 1993 ASTM International D1179-99 B ASTM International Standard Test Methods for Fluoride in Water - Ion Selective Electrode 1999 ASTM International D1179-04 B ASTM International Standard Test Methods for Fluoride in Water - Ion Selective Electrode 2004 ASTM International D1179-10 B ASTM International Standard Test Methods for Fluoride in Water - Ion Selective Electrode 2010 ASTM International D1179-16 B ASTM International Standard Test Methods for Fluoride in Water - Ion Selective Electrode 2016 ASTM International D4327-97 ASTM International Standard Test Method for Anions in Water by Suppressed Ion Chromatography 1997 ASTM International D4327-03 ASTM International Standard Test Method for Anions in Water by Suppressed Ion Chromatography 2003 ASTM International D4327-11 ASTM International Standard Test Method for Anions in Water by Suppressed Ion Chromatography 2011 ASTM International D4327-17 ASTM International Standard Test Method for Anions in Water by Suppressed Ion Chromatography 2017 ASTM International 129-71W Bran + Luebbe Fluoride in Water and Wastewater December 1972 Seal Analytical 380-75WE Bran + Luebbe Fluoride in Water and Wastewater February 1976 Seal Analytical 300.0, Rev. EPA In Methods for the Determination August 1993 E PA/600/R-93/100 National Environmental Methods 2.1 of Inorganic Substances in Environmental Samples Index 300.1, Rev. EPA In Methods for the Determination August 2000 EPA 815-R-00-014 National Environmental Methods 1.0 of Organic and Inorganic Index ------- Page 33 of 69 Compounds in Drinking Water, Vol. 1 Hach 10225, Rev. 2.0 Hach Company Hach Company SPADNS 2 (Arsenic- free) Fluoride Method 10225 - Spectrophotometric Measurement of Fluoride in Water and Wastewater January 2011 Hach 10225, Rev. 2.0 Hach 10312, Rev. 1.0 Hach Company Hach Method 10312 - Spectrophotometric Measurement of Fluoride in Finished Drinking Water Aluminum-Chromeazurol S complex (AL-CAS) Using Planar Reagent-filled Cuvettes August 2022 Hach 10312, Rev. 1.0 4110 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 18th Edition 1992 Standard Methods 4110 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 19th Edition 1995 Standard Methods 4110 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 20th Edition 1998 Standard Methods 4110 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 4110 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 4110 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods 4110 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 24th Edition 2023 Standard Methods 4500-F" B Standard Methods Standard Methods for the Examination of Water and Wastewater, 18th Edition 1992 Standard Methods 4500-F" B Standard Methods Standard Methods for the Examination of Water and Wastewater, 19th Edition 1995 Standard Methods ------- Page 34 of 69 4500-F" B Standard Methods Standard Methods for the Examination of Water and Wastewater, 20th Edition 1998 Standard Methods 4500-F" B Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 4500-F" B Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 4500-F" B Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods 4500-F" B Standard Methods Standard Methods for the Examination of Water and Wastewater, 24th Edition 2023 Standard Methods 4500-F" C Standard Methods Standard Methods for the Examination of Water and Wastewater, 18th Edition 1992 Standard Methods 4500-F" C Standard Methods Standard Methods for the Examination of Water and Wastewater, 19th Edition 1995 Standard Methods 4500-F" C Standard Methods Standard Methods for the Examination of Water and Wastewater, 20th Edition 1998 Standard Methods 4500-F" C Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 4500-F" C Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 4500-F" C Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods 4500-F" C Standard Methods Standard Methods for the Examination of Water and Wastewater, 24th Edition 2023 Standard Methods 4500-F" D Standard Methods Standard Methods for the Examination of Water and Wastewater, 18th Edition 1992 Standard Methods ------- Page 35 of 69 4500-F" D Standard Methods Standard Methods for the Examination of Water and Wastewater, 19th Edition 1995 Standard Methods 4500-F" D Standard Methods Standard Methods for the Examination of Water and Wastewater, 20th Edition 1998 Standard Methods 4500-F" D Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 4500-F" D Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 4500-F" D Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods 4500-F" D Standard Methods Standard Methods for the Examination of Water and Wastewater, 24th Edition 2023 Standard Methods 4500-F" E Standard Methods Standard Methods for the Examination of Water and Wastewater, 18th Edition 1992 Standard Methods 4500-F" E Standard Methods Standard Methods for the Examination of Water and Wastewater, 19th Edition 1995 Standard Methods 4500-F" E Standard Methods Standard Methods for the Examination of Water and Wastewater, 20th Edition 1998 Standard Methods 4500-F" E Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 4500-F" E Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 4500-F" E Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods 4500-F" E Standard Methods Standard Methods for the Examination of Water and Wastewater, 24th Edition 2023 Standard Methods 4110 B-00 Standard Methods Online Online version. Approval year is designated by the last 2 digits. 2000 Standard Methods ------- Page 36 of 69 Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 4500-F" B-97 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 1997 Standard Methods 4500-F" C-97 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 1997 Standard Methods 4500-F" D-97 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 1997 Standard Methods 4500-F" E-97 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 1997 Standard Methods D6508, Rev. 2 Waters Corp. Test Method for Determination of Dissolved Inorganic Anions in Aqueous Matrices Using Capillary Ion Electrophoresis and Chromate Electrolyte Waters Corporation Lead Criteria for analyzing arsenic, barium, beryllium, cadmium, calcium, chromium, copper, lead, nickel, selenium, sodium and thallium with digestion or directly without digestion, and other analytical test procedures are contained in Technical Notes on Drinking Water Methods (EPA/600/R-94/173), available through EPA's digital publications National Environmental Publications Internet Site (EPA/600/R-94/173). Method Organization Reference Title Date EPA Publication Source of Method Number ------- Page 37 of 69 D3559-96 D ASTM International Standard Test Methods for Lead in Water - Atomic Absorption, Graphite Furnace 1996 ASTM International D3559-03 D ASTM International Standard Test Methods for Lead in Water - Atomic Absorption, Graphite Furnace 2003 ASTM International D3559-08 D ASTM International Standard Test Methods for Lead in Water - Atomic Absorption, Graphite Furnace 2008 ASTM International D3559-15 D ASTM International Standard Test Methods for Lead in Water - Atomic Absorption, Graphite Furnace 2015 ASTM International 200.5, Rev. 4.2 EPA Determination of Trace Elements in Drinking Water by Axially Viewed Inductively Coupled Plasma - Atomic Emission Spectrometry October 2003 E PA/600- R-06/115 EPA/600-R-06/115 200.8, Rev. 5.4 EPA In Methods for the Determination of Metals in Environmental Samples, Supplement 1 May 1994 EPA/600/R-94/111 National Environmental Methods Index 200.9, Rev. 2.2 EPA In Methods for the Determination of Metals in Environmental Samples, Supplement 1 Note: Preconcentration may be required for direct analysis of lead by Method 200.9 May 1994 EPA/600/R-94/111 National Environmental Methods Index Method 1001 Palintest or Hach Company Lead in Drinking Water by Differential Pulse Anodic Stripping Voltammetry August 1999 Method 1001 Method 1001, Rev. 1.1 Palintest Lead in Drinking Water by Differential Pulse Anodic Stripping Voltammetry May 2020 Method 1001. Rev. 1.1 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 18th Edition Note: Preconcentration may be required for direct analysis of lead by Method 3113 B unless multiple in-furnace depositions are made 1992 Standard Methods ------- Page 38 of 69 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 19th Edition Note: Preconcentration may be required for direct analysis of lead by Method 3113 B unless multiple in-furnace depositions are made 1995 Standard Methods 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition Note: Preconcentration may be required for direct analysis of lead by Method 3113 B unless multiple in-furnace depositions are made 2005 Standard Methods 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition Note: Preconcentration may be required for direct analysis of lead by Method 3113 B unless multiple in-furnace depositions are made 2012 Standard Methods 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition Note: Preconcentration may be required for direct analysis of lead by Method 3113 B unless multiple in-furnace depositions are made 2017 Standard Methods 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 24th Edition Note: Preconcentration may be required for direct analysis of lead by Method 3113 B unless multiple in-furnace depositions are made 2023 Standard Methods 3113 B-99 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 1999 Standard Methods ------- Page 39 of 69 Note: Preconcentration may be required for direct analysis of lead by Method 3113 B-99 unless multiple in-furnace depositions are made 3113 B-04 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. Note: Preconcentration may be required for direct analysis of lead by Method 3113 B-04 unless multiple in-furnace depositions are made 2004 Standard Methods 3113 B-10 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. Note: Preconcentration may be required for direct analysis of lead by Method 3113 B-10 unless multiple in-furnace depositions are made 2010 Standard Methods Vlagnesium Method Organization Reference Title Date EPA Publication Number Source of Method D511-93 A ASTM International Standard Test Methods for Calcium and Magnesium in Water: Complexometric Titration 1993 ASTM International D511-03 A ASTM International Standard Test Methods for Calcium and Magnesium in Water: Complexometric Titration 2003 ASTM International D511-09 A ASTM International Standard Test Methods for Calcium and Magnesium in Water: Complexometric Titration 2009 ASTM International ------- Page 40 of 69 D511-14 A ASTM International Standard Test Methods for Calcium and Magnesium in Water: Complexometric Titration 2014 ASTM International D511-93 B ASTM International Standard Test Methods for Calcium and Magnesium in Water: Atomic Absorption Spectrometry 1993 ASTM International D511-03 B ASTM International Standard Test Methods for Calcium and Magnesium in Water: Atomic Absorption Spectrometry 2003 ASTM International D511-09 B ASTM International Standard Test Methods for Calcium and Magnesium in Water: Atomic Absorption Spectrometry 2009 ASTM International D511-14 B ASTM International Standard Test Methods for Calcium and Magnesium in Water: Atomic Absorption Spectrometry 2014 ASTM International D6919-03 ASTM International Standard Test Method for Determination of Dissolved Alkali and Alkaline Earth Cations and Ammonium in Water by Ion Chromatography 2003 ASTM International D6919-09 ASTM International Standard Test Method for Determination of Dissolved Alkali and Alkaline Earth Cations and Ammonium in Water by Ion Chromatography 2009 ASTM International D6919-17 ASTM International Standard Test Method for Determination of Dissolved Alkali and Alkaline Earth Cations and Ammonium in Water by Ion Chromatography 2017 ASTM International 200.5, Rev. 4.2 EPA Determination of Trace Elements in Drinking Water by Axially Viewed Inductively Coupled Plasma-Atomic Emission Spectrometry October 2003 E PA/600- R-06/115 EPA/600-R-06/115 200.7, Rev. 4.4 EPA In Methods for the Determination of Metals in Environmental Samples, Supplement 1 May 1994 EPA/600/R-94/111 National Environmental Methods Index 3111 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 18th Edition 1992 Standard Methods ------- Page 41 of 69 3111 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 19th Edition 1995 Standard Methods 3111 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 3111 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 3111 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods 3111 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 24th Edition 2023 Standard Methods 3120 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 18th Edition 1992 Standard Methods 3120 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 19th Edition 1995 Standard Methods 3120 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 20th Edition 1998 Standard Methods 3120 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 3120 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 3120 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods 3120 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 24th Edition 2023 Standard Methods 3500-Mg E Standard Methods Standard Methods for the Examination of Water and Wastewater, 18th Edition 1992 Standard Methods ------- Page 42 of 69 3500-Mg E Standard Methods Standard Methods for the Examination of Water and Wastewater, 19th Edition 1995 Standard Methods 3500-Mg B Standard Methods Standard Methods for the Examination of Water and Wastewater, 20th Edition 1998 Standard Methods 3500-Mg B Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 3500-Mg B Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 3500-Mg B Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods 3500-Mg B Standard Methods Standard Methods for the Examination of Water and Wastewater, 24th Edition 2023 Standard Methods 3111 B-99 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 1999 Standard Methods 3120 B-99 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 1999 Standard Methods 3500-Mg B- 97 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 1997 Standard Methods VIercury Method Organization Reference Title Date EPA Publication Number Source of Method ------- Page 43 of 69 D3223-97 ASTM International Standard Test Methods for Total Mercury in Water 1997 ASTM International D3223-02 ASTM International Standard Test Methods for Total Mercury in Water 2002 ASTM International D3223-12 ASTM International Standard Test Methods for Total Mercury in Water 2012 ASTM International D3223-17 ASTM International Standard Test Methods for Total Mercury in Water 2017 ASTM International 200.8, Rev. 5.4 EPA In Methods for the Determination of Metals in Environmental Samples, Supplement 1 May 1994 EPA/600/R-94/111 National Environmental Methods Index 245.1, Rev. 3.0 EPA In Methods for the Determination of Metals in Environmental Samples, Supplement 1 May 1994 EPA/600/R-94/111 National Environmental Methods Index 245.2 EPA In Methods for Chemical Analysis of Water and Wastes March 1983 EPA/600/4-79/020 National Environmental Methods Index 3112 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 18th Edition 1992 Standard Methods 3112 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 19th Edition 1995 Standard Methods 3112 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 3112 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 3112 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods 3112 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 24th Edition 2023 Standard Methods 3112 B-99 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 1999 Standard Methods ------- Page 44 of 69 3112 B-09 Standard Online version. Approval year is 2009 Standard Methods Methods Online designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. Nickel Criteria for analyzing arsenic, barium, beryllium, cadmium, calcium, chromium, copper, lead, nickel, selenium, sodium and thallium with digestion or directly without digestion, and other analytical test procedures are contained in Technical Notes on Drinking Water Methods (EPA/600/R-94/173), available through EPA's digital publications National Environmental Publications Internet Site (EPA/600/R-94/173). Method Organization Reference Title Date EPA Publication Number Source of Method 200.5, Rev. 4.2 EPA Determination of Trace Elements in Drinking Water by Axially Viewed Inductively Coupled Plasma - Atomic Emission Spectrometry October 2003 E PA/600- R-06/115 EPA/600-R-06/115 200.7, Rev. 4.4 EPA In Methods for the Determination of Metals in Environmental Samples, Supplement 1 Note: MDLs reported in Methods 200.7 and 200.9 were determined using a 2X preconcentration step during sample digestion; MDLs determined by direct analysis (i.e., no sample digestion) will be higher. May 1994 EPA/600/R-94/111 National Environmental Methods Index 200.8, Rev. 5.4 EPA In Methods for the Determination of Metals in Environmental Samples, Supplement 1 May 1994 EPA/600/R-94/111 National Environmental Methods Index 200.9, Rev. 2.2 EPA In Methods for the Determination of Metals in Environmental Samples, Supplement 1 Note: MDLs reported in Methods 200.7 and 200.9 were determined using a 2X preconcentration step during sample digestion; MDLs determined by direct analysis (i.e., May 1994 EPA/600/R-94/111 National Environmental Methods Index ------- Page 45 of 69 no sample digestion) will be higher. 3111 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 18th Edition 1992 Standard Methods 3111 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 19th Edition 1995 Standard Methods 3111 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 3111 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 3111 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods 3111 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 24th Edition 2023 Standard Methods 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 18th Edition 1992 Standard Methods 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 19th Edition 1995 Standard Methods 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 24th Edition 2023 Standard Methods 3120 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 18th Edition 1992 Standard Methods ------- Page 46 of 69 3120 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 19th Edition 1995 Standard Methods 3120 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 20th Edition 1998 Standard Methods 3120 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 3120 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 3120 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods 3120 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 24th Edition 2023 Standard Methods 3111 B-99 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 1999 Standard Methods 3113 B-99 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 1999 Standard Methods 3113 B-04 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 2004 Standard Methods 3113 B-10 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to 2010 Standard Methods ------- Page 47 of 69 Subpart C of Part 141 are approved. 3120 B-99 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 1999 Standard Methods Nitrate Method Organization Reference Title Date EPA Publication Number Source of Method D3867-90 A ASTM International Standard Test Methods for Nitrate-Nitrite in Water 1990 ASTM International D3867-90 B ASTM International Standard Test Methods for Nitrate-Nitrite in Water 1990 ASTM International D4327-97 ASTM International Standard Test Method for Anions in Water by Suppressed Ion Chromatography 1997 ASTM International D4327-03 ASTM International Standard Test Method for Anions in Water by Suppressed Ion Chromatography 2003 ASTM International D4327-11 ASTM International Standard Test Method for Anions in Water by Suppressed Ion Chromatography 2011 ASTM International D4327-17 ASTM International Standard Test Method for Anions in Water by Suppressed Ion Chromatography 2017 ASTM International D6508-00 ASTM International Standard Test Method for Determination of Dissolved Inorganic Anions in Aqueous Matrices using Capillary Ion Electrophoresis and Chromate Electrolyte 2000 ASTM International D6508-15 ASTM International Standard Test Method for Determination of Dissolved Inorganic Anions in Aqueous Matrices using Capillary Ion Electrophoresis and Chromate Electrolyte 2015 ASTM International ------- Page 48 of 69 601 ATI Orion Standard Method of Test for Nitrate in Drinking Water July 1994 Thermo Scientific 300.0, Rev. 2.1 EPA In Methods for the Determination of Inorganic Substances in Environmental Samples August 1993 E PA/600/R-93/100 National Environmental Methods Index 300.1, Rev. 1.0 EPA In Methods for the Determination of Organic and Inorganic Compounds in Drinking Water, Vol. 1 August 2000 EPA 815-R-00-014 National Environmental Methods Index 353.2, Rev. 2.0 EPA In Methods for the Determination of Inorganic Substances in Environmental Samples August 1993 E PA/600/R-93/100 National Environmental Methods Index Hach 10206, Rev. 2.0 Hach Company Hach Company TNTplus™ 835/836 Nitrate Method 10206 - Spectrophotometric Measurement of Nitrate in Water and Wastewater January 2011 Hach 10206, Rev. 2.0 NECi Nitrate- Reductase Method, Rev. 2.0 Nitrate Elimination Company, Inc. (NECi) Method for Nitrate Reductase Nitrate-Nitrogen Analysis of Drinking Water February 2016 NECi, Rev. 2.0 4110 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 18th Edition 1992 Standard Methods 4110 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 19th Edition 1995 Standard Methods 4110 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 20th Edition 1998 Standard Methods 4110 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 4110 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 4110 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods ------- Page 49 of 69 4110 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 24th Edition 2023 Standard Methods 4500-N03" D Standard Methods Standard Methods for the Examination of Water and Wastewater, 18th Edition 1992 Standard Methods 4500-N03- D Standard Methods Standard Methods for the Examination of Water and Wastewater, 19th Edition 1995 Standard Methods 4500-N03- D Standard Methods Standard Methods for the Examination of Water and Wastewater, 20th Edition 1998 Standard Methods 4500-N03- D Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 4500-N03" D Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 4500-N03- D Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods 4500-N03- D Standard Methods Standard Methods for the Examination of Water and Wastewater, 24th Edition 2023 Standard Methods 4500-N03- E Standard Methods Standard Methods for the Examination of Water and Wastewater, 18th Edition 1992 Standard Methods 4500-N03" E Standard Methods Standard Methods for the Examination of Water and Wastewater, 19th Edition 1995 Standard Methods 4500-N03- E Standard Methods Standard Methods for the Examination of Water and Wastewater, 20th Edition 1998 Standard Methods 4500-N03- E Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 4500-N03" E Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods ------- Page 50 of 69 45OO-NO3- E Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods 4500-N03- E Standard Methods Standard Methods for the Examination of Water and Wastewater, 24th Edition 2023 Standard Methods 4500-N03- F Standard Methods Standard Methods for the Examination of Water and Wastewater, 18th Edition 1992 Standard Methods 4500-N03- F Standard Methods Standard Methods for the Examination of Water and Wastewater, 19th Edition 1995 Standard Methods 4500-N03- F Standard Methods Standard Methods for the Examination of Water and Wastewater, 20th Edition 1998 Standard Methods 4500-N03" F Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 4500-N03- F Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 4500-N03- F Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods 4500-N03- F Standard Methods Standard Methods for the Examination of Water and Wastewater, 24th Edition 2023 Standard Methods 4110 B-00 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 2000 Standard Methods 4500-N03" D-00 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 2000 Standard Methods 4500-N03- E- 00 Standard Methods Online Online version. Approval year is designated by the last 2 digits. 2000 Standard Methods ------- Page 51 of 69 Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 45OO-NO3- F- 00 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 2000 Standard Methods Systea Easy (1-Reagent) Systea Scientific LLC Systea Easy (1-Reagent) Nitrate Method February 4, 2009 Svstea Easv (1-Reagent) B-1011 Waters Corp. Waters Test Method for Determination of Nitrite/Nitrate in Water using Single Column Ion Chromatography August 1987 Waters Corporation Nitrite Method Organization Reference Title Date EPA Publication Number Source of Method D3867-90 A ASTM International Standard Test Methods for Nitrate-Nitrite in Water 1990 ASTM International D3867-90 B ASTM International Standard Test Methods for Nitrate-Nitrite in Water 1990 ASTM International D4327-97 ASTM International Standard Test Method for Anions in Water by Suppressed Ion Chromatography 1997 ASTM International D4327-03 ASTM International Standard Test Method for Anions in Water by Suppressed Ion Chromatography 2003 ASTM International D4327-11 ASTM International Standard Test Method for Anions in Water by Suppressed Ion Chromatography 2011 ASTM International D4327-17 ASTM International Standard Test Method for Anions in Water by Suppressed Ion Chromatography 2017 ASTM International D6508-00 ASTM International Standard Test Method for Determination of Dissolved Inorganic Anions in Aqueous Matrices using Capillary Ion 2000 ASTM International ------- Page 52 of 69 Electrophoresis and Chromate Electrolyte D6508-15 ASTM International Standard Test Method for Determination of Dissolved Inorganic Anions in Aqueous Matrices using Capillary Ion Electrophoresis and Chromate Electrolyte 2015 ASTM International 300.0, Rev. 2.1 EPA In Methods for the Determination of Inorganic Substances in Environmental Samples August 1993 E PA/600/R-93/100 National Environmental Methods Index 300.1, Rev. 1.0 EPA In Methods for the Determination of Organic and Inorganic Compounds in Drinking Water, Vol. 1 August 2000 EPA 815-R-00-014 National Environmental Methods Index 353.2, Rev. 2.0 EPA In Methods for the Determination of Inorganic Substances in Environmental Samples August 1993 E PA/600/R-93/100 National Environmental Methods Index NECi Nitrate- Reductase Method, Rev. 2.0 Nitrate Elimination Company, Inc. (NECi) Method for Nitrate Reductase Nitrate-Nitrogen Analysis of Drinking Water February 2016 NECi, Rev. 2.0 4110 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 18th Edition 1992 Standard Methods 4110 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 19th Edition 1995 Standard Methods 4110 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 20th Edition 1998 Standard Methods 4110 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 4110 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 4110 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods ------- Page 53 of 69 4110 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 24th Edition 2023 Standard Methods 4500-N02" B Standard Methods Standard Methods for the Examination of Water and Wastewater, 18th Edition 1992 Standard Methods 4500-N02" B Standard Methods Standard Methods for the Examination of Water and Wastewater, 19th Edition 1995 Standard Methods 4500-N02" B Standard Methods Standard Methods for the Examination of Water and Wastewater, 20th Edition 1998 Standard Methods 4500-N02" B Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 4500-N02" B Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 4500-N02" B Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods 4500-N02" B Standard Methods Standard Methods for the Examination of Water and Wastewater, 24th Edition 2023 Standard Methods 4500-N03- E Standard Methods Standard Methods for the Examination of Water and Wastewater, 18th Edition 1992 Standard Methods 4500-N03" E Standard Methods Standard Methods for the Examination of Water and Wastewater, 19th Edition 1995 Standard Methods 4500-N03- E Standard Methods Standard Methods for the Examination of Water and Wastewater, 20th Edition 1998 Standard Methods 4500-N03- E Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 4500-N03" E Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods ------- Page 54 of 69 45OO-NO3- E Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods 4500-N03- E Standard Methods Standard Methods for the Examination of Water and Wastewater, 24th Edition 2023 Standard Methods 4500-N03- F Standard Methods Standard Methods for the Examination of Water and Wastewater, 18th Edition 1992 Standard Methods 4500-N03- F Standard Methods Standard Methods for the Examination of Water and Wastewater, 19th Edition 1995 Standard Methods 4500-N03- F Standard Methods Standard Methods for the Examination of Water and Wastewater, 20th Edition 1998 Standard Methods 4500-N03" F Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 4500-N03- F Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 4500-N03- F Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods 4500-N03- F Standard Methods Standard Methods for the Examination of Water and Wastewater, 24th Edition 2023 Standard Methods 4110 B-00 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 2000 Standard Methods 4500-N02" B-00 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 2000 Standard Methods 4500-N03- E- 00 Standard Methods Online Online version. Approval year is designated by the last 2 digits. 2000 Standard Methods ------- Page 55 of 69 Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 45OO-NO3- F- 00 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 2000 Standard Methods Systea Easy (1-Reagent) Systea Scientific LLC Systea Easy (1-Reagent) Nitrate Method February 4, 2009 Svstea Easv (1-Reagent) B-1011 Waters Corp. Waters Test Method for Determination of Nitrite/Nitrate in Water using Single Column Ion Chromatography August 1987 Waters Corporation Orthophosphate Unfiltered, no digestion or hydrolysis Method Organization Reference Title Date EPA Publication Number Source of Method D4327-97 ASTM International Standard Test Method for Anions in Water by Suppressed Ion Chromatography 1997 ASTM International D4327-03 ASTM International Standard Test Method for Anions in Water by Suppressed Ion Chromatography 2003 ASTM International D4327-11 ASTM International Standard Test Method for Anions in Water by Suppressed Ion Chromatography 2011 ASTM International D4327-17 ASTM International Standard Test Method for Anions in Water by Suppressed Ion Chromatography 2017 ASTM International D6508-00 ASTM International Standard Test Method for Determination of Dissolved Inorganic Anions in Aqueous Matrices using Capillary Ion Electrophoresis and Chromate Electrolyte 2000 ASTM International ------- Page 56 of 69 D6508-15 ASTM International Standard Test Method for Determination of Dissolved Inorganic Anions in Aqueous Matrices using Capillary Ion Electrophoresis and Chromate Electrolyte 2015 ASTM International D515-88 A ASTM International Test Methods for Phosphorus in Water 1988 ASTM International 300.0, Rev. 2.1 EPA In Methods for the Determination of Inorganic Substances in Environmental Samples August 1993 E PA/600/R-93/100 National Environmental Methods Index 300.1, Rev. 1.0 EPA In Methods for the Determination of Organic and Inorganic Compounds in Drinking Water, Vol. 1 August 2000 EPA 815-R-00-014 National Environmental Methods Index 365.1, Rev. 2.0 EPA In Methods for the Determination of Inorganic Substances in Environmental Samples August 1993 E PA/600/R-93/100 National Environmental Methods Index 4110 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 18th Edition 1992 Standard Methods 4110 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 19th Edition 1995 Standard Methods 4110 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 20th Edition 1998 Standard Methods 4110 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 4110 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 4110 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods 4110 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 24th Edition 2023 Standard Methods ------- Page 57 of 69 4500-P E Standard Methods Standard Methods for the Examination of Water and Wastewater, 18th Edition 1992 Standard Methods 4500-P E Standard Methods Standard Methods for the Examination of Water and Wastewater, 19th Edition 1995 Standard Methods 4500-P E Standard Methods Standard Methods for the Examination of Water and Wastewater, 20th Edition 1998 Standard Methods 4500-P E Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 4500-P E Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 4500-P E Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods 4500-P E Standard Methods Standard Methods for the Examination of Water and Wastewater, 24th Edition 2023 Standard Methods 4500-P F Standard Methods Standard Methods for the Examination of Water and Wastewater, 18th Edition 1992 Standard Methods 4500-P F Standard Methods Standard Methods for the Examination of Water and Wastewater, 19th Edition 1995 Standard Methods 4500-P F Standard Methods Standard Methods for the Examination of Water and Wastewater, 20th Edition 1998 Standard Methods 4500-P F Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 4500-P F Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 4500-P F Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods ------- Page 58 of 69 4500-P F Standard Methods Standard Methods for the Examination of Water and Wastewater, 24th Edition 2023 Standard Methods 4110 B-00 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 2000 Standard Methods 4500-P E-99 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 1999 Standard Methods 4500-P F-99 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 1999 Standard Methods Thermo Fisher Discrete Analyzer, Rev. 5 Thermo Fisher Scientific Thermo Fisher Scientific Orthophosphate Discrete Analyzer Method for Drinking Water 2016 Thermo Fisher Orthophosphate Method, Rev. 5.0 1-1601-85 US Geological Survey In Methods for Determination of Inorganic Substances in Water and Fluvial Sediments, USGS Series: Techniques of Water-Resource Investigation Report; edited by Fishman, M.J. and Friedman, L.C. 1989 USGS 1-2598-85 US Geological Survey In Methods for Determination of Inorganic Substances in Water and Fluvial Sediments, USGS Series: Techniques of Water-Resource Investigation Report; edited by Fishman, M.J. and Friedman, LC. 1989 USGS 1-2601-90 US Geological Survey In Methods of Analysis by the U.S. Geological Survey National Water Quality Laboratory; Determination 1993 USGS ------- Page 59 of 69 of Inorganic and Organic Constituents in Water and Fluvial Sediments, USGS Series: Open-file Report; edited by M.J. Fishman pH Method Organization Reference Title Date EPA Publication Number Source of Method D1293-95 ASTM International Standard Test Methods for pH of Water 1995 ASTM International D1293-99 ASTM International Standard Test Methods for pH of Water 1999 ASTM International D1293-12 ASTM International Standard Test Methods for pH of Water 2012 ASTM International D1293-18 ASTM International Standard Test Methods for pH of Water 2018 ASTM International 150.1 EPA In Methods for Chemical Analysis of Water and Wastes March 1983 EPA/600/4-79/020 National Environmental Methods Index 150.2 EPA In Methods for Chemical Analysis of Water and Wastes March 1983 EPA/600/4-79/020 National Environmental Methods Index 150.3 EPA Determination ofpHin Drinking Water February 2017 EPA-815-B-17-001 EPA-815-B-17-001 4500-H+ B Standard Methods Standard Methods for the Examination of Water and Wastewater, 18th Edition 1992 Standard Methods 4500-H+ B Standard Methods Standard Methods for the Examination of Water and Wastewater, 19th Edition 1995 Standard Methods 4500-H+ B Standard Methods Standard Methods for the Examination of Water and Wastewater, 20th Edition 1998 Standard Methods 4500-H+ B Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 4500-H+ B Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 4500-H+ B Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods ------- Page 60 of 69 4500-H+ B Standard Methods Standard Methods for the Examination of Water and Wastewater, 24th Edition 2023 Standard Methods 4500-H+ B- 00 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 2000 Standard Methods Selenium Criteria for analyzing arsenic, barium, beryllium, cadmium, calcium, chromium, copper, lead, nickel, selenium, sodium and thallium with digestion or directly without digestion, and other analytical test procedures are contained in Technical Notes on Drinking Water Methods (EPA/600/R-94/173), available through EPA's digital publications National Environmental Publications Internet Site (EPA/600/R-94/173). Method Organization Reference Title Date EPA Publication Number Source of Method D3859-98 A ASTM International Standard Test Methods for Selenium in Water-Atomic Absorption, Hydride Generation 1998 ASTM International D3859-03 A ASTM International Standard Test Methods for Selenium in Water-Atomic Absorption, Hydride Generation 2003 ASTM International D3859-08 A ASTM International Standard Test Methods for Selenium in Water-Atomic Absorption, Hydride Generation 2008 ASTM International D3859-15 A ASTM International Standard Test Methods for Selenium in Water-Atomic Absorption, Hydride Generation 2015 ASTM International D3859-98 B ASTM International Standard Test Methods for Selenium in Water-Atomic Absorption, Graphite Furnace 1998 ASTM International D3859-03 B ASTM International Standard Test Methods for Selenium in Water-Atomic Absorption, Graphite Furnace 2003 ASTM International D3859-08 B ASTM International Standard Test Methods for Selenium in Water-Atomic Absorption, Graphite Furnace 2008 ASTM International D3859-15 B ASTM International Standard Test Methods for Selenium in Water-Atomic Absorption, Graphite Furnace 2015 ASTM International ------- Page 61 of 69 200.5, Rev. 4.2 EPA Determination of Trace Elements in Drinking Water by Axially Viewed Inductively Coupled Plasma - Atomic Emission Spectrometry October 2003 E PA/600- R-06/115 EPA/600-R-06/115 200.8, Rev. 5.4 EPA In Methods for the Determination of Metals in Environmental Samples, Supplement 1 May 1994 EPA/600/R-94/111 National Environmental Methods Index 200.9, Rev. 2.2 EPA In Methods for the Determination of Metals in Environmental Samples, Supplement 1 Note: MDLs reported in Methods 200.7 and 200.9 were determined using a 2X preconcentration step during sample digestion; MDLs determined by direct analysis (i.e., no sample digestion) will be higher. May 1994 EPA/600/R-94/111 National Environmental Methods Index 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 18th Edition 1992 Standard Methods 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 19th Edition 1995 Standard Methods 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods 3113 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 24th Edition 2023 Standard Methods 3114 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 18th Edition 1992 Standard Methods ------- Page 62 of 69 3114 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 19th Edition 1995 Standard Methods 3114 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 3114 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 3114 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods 3114 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 24th Edition 2023 Standard Methods 3113 B-99 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 1999 Standard Methods 3113 B-04 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 2004 Standard Methods 3113 B-10 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 2010 Standard Methods 3114 B-97 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 1997 Standard Methods 3114 B-09 Standard Methods Online Online version. Approval year is designated by the last 2 digits. 2009 Standard Methods ------- Page 63 of 69 Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. Silica Method Organization Reference Title Date EPA Publication Number Source of Method D859-94 ASTM International Standard Test Method for Silica in Water 1994 ASTM International D859-00 ASTM International Standard Test Method for Silica in Water 2000 ASTM International D859-05 ASTM International Standard Test Method for Silica in Water 2005 ASTM International D859-10 ASTM International Standard Test Method for Silica in Water 2010 ASTM International D859-16 ASTM International Standard Test Method for Silica in Water 2016 ASTM International 200.5, Rev. EPA Determination of Trace Elements October 2003 E PA/600- R-06/115 EPA/600-R-06/115 4.2 in Drinking Water by Axially Viewed Inductively Coupled Plasma - Atomic Emission Spectrometry 200.7, Rev. EPA In Methods for the Determination May 1994 EPA/600/R-94/111 National Environmental Methods 4.4 of Metals in Environmental Samples, Supplement 1 Note: MDLs reported in Methods 200.7 and 200.9 were determined using a 2X preconcentration step during sample digestion; MDLs determined by direct analysis (i.e., no sample digestion) will be higher. Index 3120 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 18th Edition 1992 Standard Methods 3120 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 19th Edition 1995 Standard Methods ------- Page 64 of 69 3120 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 20th Edition 1998 Standard Methods 3120 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 3120 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 3120 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods 3120 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 24th Edition 2023 Standard Methods 4500-Si D Standard Methods Standard Methods for the Examination of Water and Wastewater, 18th Edition 1992 Standard Methods 4500-Si D Standard Methods Standard Methods for the Examination of Water and Wastewater, 19th Edition 1995 Standard Methods 4500-Si E Standard Methods Standard Methods for the Examination of Water and Wastewater, 18th Edition 1992 Standard Methods 4500-Si E Standard Methods Standard Methods for the Examination of Water and Wastewater, 19th Edition 1995 Standard Methods 4500-Si F Standard Methods Standard Methods for the Examination of Water and Wastewater, 18th Edition 1992 Standard Methods 4500-Si F Standard Methods Standard Methods for the Examination of Water and Wastewater, 19th Edition 1995 Standard Methods 4500-SiCh C Standard Methods Standard Methods for the Examination of Water and Wastewater, 20th Edition 1998 Standard Methods 4500-SiCh C Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods ------- Page 65 of 69 4500-SiCh C Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 4500-SiCh C Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods 4500-SiCh C Standard Methods Standard Methods for the Examination of Water and Wastewater, 24th Edition 2023 Standard Methods 4500-SiCh D Standard Methods Standard Methods for the Examination of Water and Wastewater, 20th Edition 1998 Standard Methods 4500-SiCh D Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 4500-SiCh D Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 4500-SiCh D Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods 4500-SiCh D Standard Methods Standard Methods for the Examination of Water and Wastewater, 24th Edition 2023 Standard Methods 4500-SiCh E Standard Methods Standard Methods for the Examination of Water and Wastewater, 20th Edition 1998 Standard Methods 4500-SiCh E Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 4500-SiCh E Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 4500-SiCh E Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods 4500-SiCh E Standard Methods Standard Methods for the Examination of Water and Wastewater, 24th Edition 2023 Standard Methods 3120 B-99 Standard Methods Online Online version. Approval year is designated by the last 2 digits. 1999 Standard Methods ------- Page 66 of 69 Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 4500-SiCh C- Standard Online version. Approval year is 1997 Standard Methods 97 Methods Online designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 4500-SiCh Standard Online version. Approval year is 1997 Standard Methods D-97 Methods Online designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 4500-SiCh E- Standard Online version. Approval year is 1997 Standard Methods 97 Methods Online designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 1-1700-85 US Geological Survey In Methods for Determination of Inorganic Substances in Water and Fluvial Sediments, USGS Series: Techniques of Water-Resource Investigation Report; edited by Fishman, M.J. and Friedman, LC. 1989 USGS 1-2700-85 US Geological Survey In Methods for Determination of Inorganic Substances in Water and Fluvial Sediments, USGS Series: Techniques of Water-Resource Investigation Report; edited by Fishman, M.J. and Friedman, LC. 1989 USGS Sodium Criteria for analyzing arsenic, barium, beryllium, cadmium, calcium, chromium, copper, lead, nickel, selenium, sodium and thallium with digestion or directly without digestion, and other analytical test procedures are contained in Technical Notes on Drinking Water Methods (EPA/600/R-94/173), available through EPA's digital publications National Environmental Publications Internet Site (EPA/600/R-94/173). ------- Page 67 of 69 Method Organization Reference Title Date EPA Publication Number Source of Method D6919-03 ASTM International Standard Test Method for Determination of Dissolved Alkali and Alkaline Earth Cations and Ammonium in Water and Wastewater by Ion Chromatography 2003 ASTM International D6919-09 ASTM International Standard Test Method for Determination of Dissolved Alkali and Alkaline Earth Cations and Ammonium in Water and Wastewater by Ion Chromatography 2009 ASTM International D6919-17 ASTM International Standard Test Method for Determination of Dissolved Alkali and Alkaline Earth Cations and Ammonium in Water and Wastewater by Ion Chromatography 2017 ASTM International 200.5, Rev. 4.2 EPA Determination of Trace Elements in Drinking Water by Axially Viewed Inductively Coupled Plasma - Atomic Emission Spectrometry October 2003 E PA/600- R-06/115 EPA/600-R-06/115 200.7, Rev. 4.4 EPA In Methods for the Determination of Metals in Environmental Samples, Supplement 1 Note: MDLs reported in Methods 200.7 and 200.9 were determined using a 2X preconcentration step during sample digestion; MDLs determined by direct analysis (i.e., no sample digestion) will be higher. May 1994 EPA/600/R-94/111 National Environmental Methods Index 3111 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 18th Edition 1992 Standard Methods 3111 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 19th Edition 1995 Standard Methods ------- Page 68 of 69 3111 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 3111 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 3111 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods 3111 B Standard Methods Standard Methods for the Examination of Water and Wastewater, 24th Edition 2023 Standard Methods 3111 B-99 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 1999 Standard Methods Temperature Method Organization Reference Title Date EPA Publication Number Source of Method 2550 Standard Methods Standard Methods for the Examination of Water and Wastewater, 18th Edition 1992 Standard Methods 2550 Standard Methods Standard Methods for the Examination of Water and Wastewater, 19th Edition 1995 Standard Methods 2550 Standard Methods Standard Methods for the Examination of Water and Wastewater, 20th Edition 1998 Standard Methods 2550 Standard Methods Standard Methods for the Examination of Water and Wastewater, 21st Edition 2005 Standard Methods 2550 Standard Methods Standard Methods for the Examination of Water and Wastewater, 22nd Edition 2012 Standard Methods 2550 Standard Methods Standard Methods for the Examination of Water and Wastewater, 23rd Edition 2017 Standard Methods ------- Page 69 of 69 2550 Standard Methods Standard Methods for the Examination of Water and Wastewater, 24th Edition 2023 Standard Methods 2550-00 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 2000 Standard Methods 2550-10 Standard Methods Online Online version. Approval year is designated by the last 2 digits. Only online versions cited in the regulations or in Appendix A to Subpart C of Part 141 are approved. 2010 Standard Methods Thallium Criteria for analyzing arsenic, barium, beryllium, cadmium, calcium, chromium, copper, lead, nickel, selenium, sodium and thallium with digestion or directly without digestion, and other analytical test procedures are contained in Technical Notes on Drinking Water Methods (EPA/600/R-94/173), available through EPA's digital publications National Environmental Publications Internet Site (EPA/600/R-94/173). Method Organization Reference Title Date EPA Publication Number Source of Method 200.8, Rev. 5.4 EPA In Methods for the Determination of Metals in Environmental Samples, Supplement 1 May 1994 EPA/600/R-94/111 National Environmental Methods Index 200.9, Rev. 2.2 EPA In Methods for the Determination of Metals in Environmental Samples, Supplement 1 Note: Preconcentration may be required for direct analysis of thallium by Method 200.9 May 1994 EPA/600/R-94/111 National Environmental Methods Index ------- |